Fix ENV syntax in Dockerfiles

Author: lresende

etc/docker/demo-base/Dockerfile

@@ -27,8 +27,8 @@ ENV SHELL=/bin/bash \
 ENV HOME=/home/$NB_USER \
     PATH=$JAVA_HOME/bin:$ANACONDA_HOME/bin:$HADOOP_HOME/bin:$SPARK_HOME/bin:$PATH
 
-ENV SPARK_VER $SPARK_VERSION
-ENV HADOOP_VER 3.3.1
+ENV SPARK_VER=$SPARK_VERSION
+ENV HADOOP_VER=3.3.1
 
 # INSTALL / DOWNLOAD ALL NEEDED PACKAGES
 RUN dpkg --purge --force-depends ca-certificates-java \

etc/docker/enterprise-gateway/Dockerfile

@@ -4,8 +4,8 @@ FROM $BASE_CONTAINER
 
 ARG SPARK_VERSION
 
-ENV SPARK_VER $SPARK_VERSION
-ENV SPARK_HOME /opt/spark
+ENV SPARK_VER=$SPARK_VERSION
+ENV SPARK_HOME=/opt/spark
 
 
 RUN mamba install --quiet --yes \
@@ -22,7 +22,7 @@ USER root
 
 RUN apt update && apt install -yq curl openjdk-8-jdk
 
-ENV JAVA_HOME /usr/lib/jvm/java
+ENV JAVA_HOME=/usr/lib/jvm/java
 RUN ln -s $(readlink -f /usr/bin/javac | sed "s:/bin/javac::") ${JAVA_HOME}
 
 # Download and install Spark

etc/docker/kernel-image-puller/Dockerfile

@@ -17,11 +17,11 @@ RUN apt-get update && apt-get install cri-tools
 
 RUN echo $PATH
 # The following environment variables are supported - defaults provided.  Override as needed.
-ENV KIP_GATEWAY_HOST http://localhost:8888
-ENV KIP_INTERVAL 300
-ENV KIP_LOG_LEVEL INFO
-ENV KIP_NUM_PULLERS 2
-ENV KIP_NUM_RETRIES 3
-ENV KIP_PULL_POLICY 'IfNotPresent'
+ENV KIP_GATEWAY_HOST=http://localhost:8888
+ENV KIP_INTERVAL=300
+ENV KIP_LOG_LEVEL=INFO
+ENV KIP_NUM_PULLERS=2
+ENV KIP_NUM_RETRIES=3
+ENV KIP_PULL_POLICY='IfNotPresent'
 
 CMD [ "python", "./kernel_image_puller.py" ]

etc/docker/kernel-py/Dockerfile

@@ -5,7 +5,7 @@ FROM $BASE_CONTAINER
 ENV PATH=$PATH:$CONDA_DIR/bin
 
 # Add debugger support
-RUN pip install --upgrade ipykernel
+RUN pip install --upgrade --no-cache-dir ipykernel
 
 RUN conda install --quiet --yes \
     cffi \
@@ -29,7 +29,7 @@ RUN chown jovyan:users /usr/local/bin/bootstrap-kernel.sh && \
 
 USER jovyan
 
-ENV KERNEL_LANGUAGE python
+ENV KERNEL_LANGUAGE=python
 
 # Disble healthcheck inherited from notebook image
 HEALTHCHECK NONE

etc/docker/kernel-r/Dockerfile

@@ -25,7 +25,7 @@ RUN chown jovyan:users /usr/local/bin/bootstrap-kernel.sh && \
 
 USER jovyan
 
-ENV KERNEL_LANGUAGE R
+ENV KERNEL_LANGUAGE=R
 
 # Disble healthcheck inherited from notebook image
 HEALTHCHECK NONE

etc/docker/kernel-scala/Dockerfile

@@ -17,5 +17,5 @@ RUN adduser --system -uid 1000 jovyan --ingroup users && \
     chown -R jovyan:users /usr/local/bin/kernel-launchers
 
 USER jovyan
-ENV KERNEL_LANGUAGE scala
+ENV KERNEL_LANGUAGE=scala
 CMD /usr/local/bin/bootstrap-kernel.sh

etc/docker/kernel-spark-py/Dockerfile

@@ -7,11 +7,11 @@ FROM $BASE_CONTAINER
 
 ARG SPARK_VERSION
 
-ENV SPARK_VER $SPARK_VERSION
-ENV SPARK_HOME /opt/spark
-ENV KERNEL_LANGUAGE python
-ENV R_LIBS_USER $R_LIBS_USER:${SPARK_HOME}/R/lib
-ENV PATH $PATH:$SPARK_HOME/bin
+ENV SPARK_VER=$SPARK_VERSION
+ENV SPARK_HOME=/opt/spark
+ENV KERNEL_LANGUAGE=python
+ENV R_LIBS_USER=$R_LIBS_USER:${SPARK_HOME}/R/lib
+ENV PATH=$PATH:$SPARK_HOME/bin
 
 USER root
 
@@ -26,7 +26,7 @@ RUN dpkg --purge --force-depends ca-certificates-java \
     libssl-dev \
     && rm -rf /var/lib/apt/lists/*
 
-ENV JAVA_HOME /usr/lib/jvm/java
+ENV JAVA_HOME=/usr/lib/jvm/java
 RUN ln -s $(readlink -f /usr/bin/javac | sed "s:/bin/javac::") ${JAVA_HOME}
 
 # Download and install Spark

etc/docker/kernel-spark-r/Dockerfile

@@ -8,11 +8,11 @@ ARG SPARK_VERSION
 
 USER root
 
-ENV SPARK_VER $SPARK_VERSION
-ENV SPARK_HOME /opt/spark
+ENV SPARK_VER=$SPARK_VERSION
+ENV SPARK_HOME=/opt/spark
 ENV KERNEL_LANGUAGE=R
-ENV R_LIBS_USER $R_LIBS_USER:${R_HOME}/library:${SPARK_HOME}/R/lib
-ENV PATH $PATH:$SPARK_HOME/bin
+ENV R_LIBS_USER=$R_LIBS_USER:${R_HOME}/library:${SPARK_HOME}/R/lib
+ENV PATH=$PATH:$SPARK_HOME/bin
 
 RUN dpkg --purge --force-depends ca-certificates-java \
     && apt-get update \
@@ -23,7 +23,7 @@ RUN dpkg --purge --force-depends ca-certificates-java \
     libssl-dev \
     && rm -rf /var/lib/apt/lists/*
 
-ENV JAVA_HOME /usr/lib/jvm/java
+ENV JAVA_HOME=/usr/lib/jvm/java
 RUN ln -s $(readlink -f /usr/bin/javac | sed "s:/bin/javac::") ${JAVA_HOME}
 
 # Download and install Spark

etc/docker/kernel-tf-gpu-py/Dockerfile

@@ -27,5 +27,5 @@ RUN adduser --system --uid 1000 --gid 100 jovyan && \
 
 
 USER jovyan
-ENV KERNEL_LANGUAGE python
+ENV KERNEL_LANGUAGE=python
 CMD /usr/local/bin/bootstrap-kernel.sh

etc/docker/kernel-tf-py/Dockerfile

@@ -4,7 +4,7 @@ ARG BASE_CONTAINER=jupyter/tensorflow-notebook:2023-10-20
 
 FROM $BASE_CONTAINER
 
-ENV KERNEL_LANGUAGE python
+ENV KERNEL_LANGUAGE=python
 
 ADD jupyter_enterprise_gateway_kernel_image_files*.tar.gz /usr/local/bin/